Hughes & Kettner Fortess Bass Preamp – Pre-Owned

Key Features:

• Analog Signal Path: Full analog preamp circuit.
• Tone Controls:
  • 4-band EQ: Bass, Middle, Treble, and Presence for precise tone shaping.
• Gain Control: Adjustable gain to dial in everything from clean, transparent tones to warm, overdriven sounds.
• Overdrive Circuit: Built-in overdrive for additional gain and tone shaping.
• Effects Loop: Series effects loop (send/return) for integrating external pedals or processors.
• Direct Output:
  • Balanced XLR Output for direct connection to PA systems or recording devices with ground lift.
  • Unbalanced ¼” Output for standard amplifier connections.

Connectivity:

• Input: 1/4″ jack for instrument connection.
• Output:
  • 1/4″ Jack (for standard amplifier connection).
  • Balanced XLR Output (with ground lift switch) for direct connection to mixers or recording interfaces.
  • Headphone Out (1/4″ TRS jack) for silent practice.
• Effects Loop: 1/4″ Send & Return jacks (for external pedal effects).

Tone Shaping Features:

• 4-band Equalizer:
  • Bass: ±15dB @ 60Hz
  • Middle: ±15dB @ 1kHz
  • Treble: ±15dB @ 5kHz
  • Presence: ±15dB @ 10kHz
• Gain Control: Continuous gain adjustment from clean to overdrive.
• Overdrive Section: Adjustable from mild tube-like warmth to full-blown distortion.

Performance Specifications:

• Impedance:
  • Input Impedance: ≥ 1 MΩ (for instrument input)
  • Output Impedance: 100Ω (XLR out)
• Frequency Response: 20Hz – 20kHz (±1dB)
• Signal-to-Noise Ratio: >90dB (unweighted)
• Total Harmonic Distortion (THD): <0.1% at 1kHz (at 0dB output)
• Power Supply: 12V DC (adapter included).

Build and Design:

• Chassis: Rugged metal enclosure designed for durability on the road.
• Dimensions:
  • Width: 8.5 inches (approx. 21.5 cm)
  • Depth: 6.5 inches (approx. 16.5 cm)
  • Height: 2.25 inches (approx. 5.7 cm)
• Weight: ~2.2 lbs (1 kg).

Additional Features:

• Headphone Out: For private practice.
• Ground Lift: Switchable on XLR output to prevent ground loop hum in PA systems.
• Mute Switch: Mutes the output for tuning or instrument changes without unplugging.
• Bypass: True bypass for the cleanest signal when not in use.